Any engine mods done to the car or is it still stock?
We keep almost all the Pfadt Suspension parts (Coilovers / Sways / Etc) in stock as well as ATE "Super Blue" fluid and a full line of Carbotech Race pads. Stainless lines we keep in stock for the C6 / Camaro / CTS-V's but I will check on your C5Z.
Personally, I would run it on stock suspension first to see what you think and then upgrade accordingly. Or, you could just lower it on stock bolts for a lower center-of-gravity to save from having to buy any parts. If the stock rotors are good now keep them and just add Carbotech XP10's up front and XP8's on the rear if you on street tires. Race tires I would bump to XP12's up front and 10's in the back.
Good lines / pads / fluids and you should be ready to roll
Jeff